4.What is the greatest risk that one faces in having a dusty house? A dusty house might a.cause the incidence of allergies
b. be a reason for accidents in the house
c. increase the temperature of the environment
d. result in the early destruction of the furniture
5. Knowing the composition of dust will especially help persons with
a. motor difficulties
b. physical disabilities
c. circulatory concerns
d. respiratory problems
6. In this selection, the word "habits” refers to a. one's unusual behavior
b. being addicted to something
c. the work one occasionally performs
d. the manner by which one repeatedly does a task​